EP 1121302 B1 20051228 - WRAPPING FILMS
Title (en)
WRAPPING FILMS
Title (de)
VERPACKUNGSFOLIEN
Title (fr)
PELLICULE POUR L'EMBALLAGE
Publication
Application
Priority
- JP 9905475 W 19991005
- JP 28398098 A 19981006
- JP 7857099 A 19990323
Abstract (en)
[origin: US6551687B1] The wrapping film of the present invention has a sticky surface, convexities, and flat portions of film disposed between the convexities on at least one side, and comprises at least one agent selected from the group consisting of a surface active agent, an adhesive agent, and an oily agent. The wrapping film has a shear adhesion strength of at most 400 cN/25 cm2 when measured subsequent to bringing said sticky surface into contact with a glass surface having a surface roughness of from 0.7 to 1.5 nm under a pressure of 4 Pa, a shear adhesion strength of at least 700 cN/25 cm2 when measured subsequent to bringing said sticky surface into contact with said glass surface under a pressure of 4 kPa, and the ratio of the height of the convexities to the thickness of the flat portion ranges from 0.03 to 1.67. The wrapping film may also have a surface with a roughness and waviness (Ra') of at least 40 nm as measured in a non-extended state, and an elongation at break of at least 10%.
IPC 1-7
IPC 8 full level
B32B 3/26 (2006.01); B32B 27/08 (2006.01); B65D 65/38 (2006.01)
CPC (source: EP US)
B32B 3/26 (2013.01 - EP US); B32B 27/08 (2013.01 - EP US); B65D 65/38 (2013.01 - EP US); Y10T 428/24355 (2015.01 - EP US); Y10T 428/24942 (2015.01 - EP US); Y10T 428/28 (2015.01 - EP US); Y10T 428/31938 (2015.04 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
US 6551687 B1 20030422; CN 1137035 C 20040204; CN 1322179 A 20011114; DE 69929225 D1 20060202; DE 69929225 T2 20060831; EP 1121302 A1 20010808; EP 1121302 B1 20051228; TW 431995 B 20010501; WO 0020296 A1 20000413
DOCDB simple family (application)
US 78791101 A 20010330; CN 99811819 A 19991005; DE 69929225 T 19991005; EP 99970071 A 19991005; JP 9905475 W 19991005; TW 88117234 A 19991006